<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="textml; charset=utf-8" />
<title></title>
<style>

#div1{
	width:100px;
	height: 40px;
	background: pink;
	margin-bottom: 15px;
	border-radius: 10px;
}
#div2{
	width: 100px;
	height: 200px;
	background: #666;
	border-radius: 10px;
}

</style>
<script type="text/javascript">
	window.onload=function()
	{   var timer=null;
		var odiv1=document.getElementById('div1');
		var odiv2=document.getElementById('div2');
	    odiv2.onmouseover=odiv1.onmouseover=function(){
	    	clearTimeout(timer);
	    	odiv2.style.display='block';
	    };
	    odiv1.onmouseout=odiv2.onmouseout=function(){
	     timer=setTimeout(function(){
	    		odiv2.style.display='none';
	    	},500);
	    	
	    };
	};
</script>
</head>
<body>
<div id="div1">
</div>
<div id="div2">
</div>

</body>
</html>
